I'm so glad you brought up fantasy role plays because many people enjoy them and feel guilty. So the more we talk about the subject, the more people will begin to understand that fantasies can be a wonderful enhancement.
It sounds like your guilty feelings may be coming from some idea that there's a "right way" and a "wrong way" to have sex. Many of us get these kinds of messages growing up. They're not based on any facts, but are instead the reflection of cultural or family traditions. In fact, it's very common for people in long-term relationships to role play in order to spice things up. After all, even if you could afford the best steak, night after night, eventually, you'd want some variety, right? Role playing is a way to experience some variety without any risk to the relationship.
So how to get over the discomfort and guilt? I can't wave a magic wand for you; however, I can recommend some very excellent books as resources. The first one is a classic: "My Secret Garden," by Nancy Friday. This is a book in which women share their sexual fantasies. It has been through many editions because it's so popular. You can find it online, both used and in paperback.
After reading this book, I think you'll realize just how many women fantasize--and it may also help you to become more comfortable sharing your fantasies with your husband. Best of luck to you. Dr. J
Thank you for your insightful reply. I will take your suggestion of reading My Secret Garden in hopes that I become more comfortable with fantasy role play and let it all fly so to speak. LOL. My husband is very much into it and I know he will not judge me for my fantasies and that I realize that I need to share with him so that we can fully enjoy the pleasures of sex.